Steam-boiler furnace



Sept; 4, 1923. 1,466,771

' J. N ToMEs A STEAM BOILER FURNAGE Filed sem.' 19,`1921 2 sheets-sheet1 E] l t JN Tomes,

J. N. TOMEs STEAM BOILER FURNACE.

sept. 4*, 1923. f 1,466,771

Filed sept. 19 1921 2 lsheets-sheet 2 Patented Sept. 4?, 1923.

,fairen JOSEPH N. TOMES,.OF BUFFALO, ll'E YORK,

OONSUI'JIER AND FUEL ECONGBIIZER CO.,

aerien or New YORK i? F i C E LPAI STEAM-BOILER F'RNACE.

Application filed September 19, 1921. Serial No. 501,684.

VTo aZZ w/wm t may concern.'

Be it known that I, JOSEPH N. ToMns, a citizen of the United States,residing at Buffalo, in the county of Erie and State or New York, haveinvented certain new and useful Improvements in Steaml3oiler Furnaces;and I do hereby declare the following to be afull, clear, and exactdescription of the invention, such as :will enable others skilled in theart to which it appertains to y make and use the same.

lThis invention relates to a steam boiler furnace of smokeconsumingconstruction.

The main object is to improve the construction and render more eflicientin operation the furnace disclosed in my application for Letters Patentof the United States Serial N o. 824,866, filed September 19, 1919. Y Aparticular aim Ais to provide a means whereby steam may be generated inless time than it requires in the apparatus of said pending application.

Another aim is to provide means whereby heated air from the irebox maybe Supplied by the fan employed to the boiler, and a vent means forcombination with said means.

Additional objects and advantages will appear hereinafter from thedescription taken in connection with the accompanying drawingsillustrating the practical embodiment.

In said drawings Figure l is a front elevation of the iinproved furnace;

Figure 2 is aview thereof principally in longitudinal and verticalsection; and

Figure 3 is a vertical sectional view on the line 3*-8 of Figure 2.

Referring specifically to the drawings wherein like reference charactersdesignate.

like or similar parts, a disclosure in the main is similar to that ofthe pending application referred to. A casing A is employed within whicha boiler B is disposed above a grate C. lIhe door to the irebox is shownatl) while the door to the ash pit is `illustrated at E. Grate C issupported by a fire wall l?. Y rllubes G are disposed longitudinally ofthe boiler B at their front ends communicating with a smoke box I-I fromwhich the stack extends at I. A damper J is provided in said stack I. Apipe or flue K communicates at one end with the stack I and at its otherend with the ash pit.

A fan is provided at L, operable to induce air through a discharge pipeM, having a damper N therein, and which leads to a header O. The rearends of the tubes G are open and the boiler is spaced from the rear wallto provide a chamber P. Branch pipes 2 extend through the rear wall ofthe casing A into the spacey I) and terminate in line with andrelatively close to the open rear ends of the tubes G.

rIhe steam dome is indicated at B and leading therefrom to-a pipe Rwhich communicates with the header O. Pipe R has a valve S therein.

In this instance, the air intake pipe for the fan AL, which is shown at4, extends upwardly, and is then elongated inwardly, being mounted inthe rear wall of casing A and having its intake end disposed over orrelatively close to the irebox so that heated air will be drawn in asthe fan L operates. Cooperating with this intake, in order to supplyproper draft, a pipe or stack cured in the casing with the space P andto the atmosphere above the casing. This stack 6 is unobstructedthroughout, as shown. Also in this instance swivel or other valves and8, are provided respectively, in the doors I) and E, in order that theymay be opened, when desired, yto enable air to be drawn in therethrough.

` In operation, with a fire on the grate C, fan L is operated, whichwill draw in air through the pipe 4-5 from the iirebox, which will thusberheated, and discharge it through pipes M, header 0, and pipes 2, intothe pipe G and the fluevK. During this operation 0f course the valve Sis closed. As' the heated air passes the gap between pipes G and 2, avacuum is created, which draws the products of combustion into the pipeG and iue K. Due to the draft created in the furnace, products ofcombustion will bypass into the flue K and be discharged under thegrate, so as to pass through the lire and thus become completelyconsumed. In'the pending application referred to, the air drawn in andrdischarged through the pipe 2, is cold, which retards generation ofsteam. In this instance, the heated air is discharged in said pipe 2 andI find that steam can be generated in a much shorter period of time. Thestack 6 provides the 6 is se-' A, in communication necessary Vent forelicctive epera'ion o"A the its intake end adjacent the pipe 5 inconveying heated air from the ive healed air tht-ret ein, a

lire box. 'ans lor said heated aii leading When steam is generated, thevalve N may lan haring L be closed and Valve S opened, so that steaniwill pass from the dome l through the pipe l vinto the headei (l, and hedischarged through pipes 2 inte pipes 'G to ei'lcct a Vacuum at the gapbetween pipes 2 und fil for the saine purpose as the heated air. Valves7 and 8 may be adjusted when additional dfzitt or air is desired.

My i1n rove1uents have been lf'ound very fdective in operation and to`give a *very zcnsiderable saving' in the quanti@v el" coal eu' otheriliuel Which is used.

Changes in the spirit und scope may be resorted to.

What is claimed isz-- l. A, furnace o'l the class described having' :Lsteam boiler. means for passage ot air therethrough providing a jrapWithin he furnace to induce products of embusion through the boiler.said means being-` in Iominunication with the Airebox to conve); heatedeir therefrom, and a vent means to? the liurnai-e te Cooperate with saidmeans and haring' its discharge end :it said gap.

2. furnace ot the class described havinf;` a steam boiler. a casingvwith a wall spaced Ytroni the boiler to provide an outlet space forproducts ol combustion7 a stack leading 'freni said splice? a lian, anintake pipe tor said 'tan extending through said A. l t

a plurality of tubes wall into said space through the tubes of theoutlet liuc means with Which boiler7 and said boilerl tubes communicate.

3. er Ylurnzlice olf the class described having a steam boiler7 :i witha Well spaced troni the boiler te provide an outlet space ier productsof coinl'iustion, a stack leading treinsaid space, a fen, an intake pipefor said tan extending through paid wail and haring4 its intake endadjacent the Firebox to iefeive heated air therefrom, a discharge meansvtor said heated air leading from the 'ien having a pluralit)v of tubespassing through said wall into said space and terniinetiug short of thetubes oit the boiler to iuovide gaps to induce products et combustionthrough the tubes ot the boiler, outlet l'iue means with which saidboiler tubes communicate, a flue leading from said outlet lue means tothe ashpit, and the ashpit and iirebox doors haring air inlet Valves.

ln testimony whereof l alliX my signature in presence el two witnesses.

JOSEPH N. TOMES. llitnesses JOHN ANDERSON, GEORGE MomuseN.

